#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

int sstrlen(char* a)
{
	int i = 0;
	for (i = 0; a[i] != '\0'; i++)
		;
	return i;
}

int mainstrlen()
{
	char a[] = "asfnofei0";
	printf("%d\n",sstrlen(a));
	return 0;
}